Addressing and installation
4.2 Addressing the Channels
Fail-safe signal modules
Installation and Operating Manual, 01/2010, A5E00085586-10
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4.2
Addressing the Channels
Addresses of fail-safe signal modules
The channels of fail-safe signal modules are addressed similar to S7-300 standard I/O
modules.
4
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The byte address is derived from the module start address set in the object properties of the
module in
STEP 7HW Config. The bit address is derived from the channel's position at the
module. A byte address is always assigned eight channels in successive order.
Address space allowed for use in standard mode
Address space allowed for the byte address:
●
S7 Distributed Safety and S7 F/FH Systems: the entire I/O area (within and outside the
process image), depending on the CPU used
For the SM 326; DI 24 x DC 24 V (order no. 6ES7326-1BK00-0AB0),
SM 326; DI 8 x NAMUR, SM 326 DO 10 x DC 24V/2A and
SM 336; AI 6 x 13 Bit also applies: 8 to 8184 in increments of 8.
Address space allowed for use in safety mode
Address space allowed for the byte address:
●
S7 Distributed Safety: within the area of the process image, depending on the F-CPU
used
For the SM 326; DI 24 x DC 24 V (order no. 6ES7326-1BK00-0AB0),
SM 326; DI 8 x NAMUR, SM 326 DO 10 x DC 24V/2A and
SM 336; AI 6 x 13 Bit also applies: 8 to 8184 in increments of 8.
●
S7 F/FH Systems: within the area of the process image, depending on the F-CPU used
For the SM 326; DI 24 x DC 24 V (order no. 6ES7326-1BK00-0AB0),
SM 326; DI 8 x NAMUR, SM 326 DO 10 x DC 24V/2A and
SM 336; AI 6 x 13 Bit also applies: 8 to 8184 in increments of 8.
Accessing channels of F-SMs operating in standard mode
Channels of the F-SMs are accessed similar to the channels of S7-300 standard I/O
modules.
